Answer:
[tex]\begin{gathered} (i_)\text{ Arsenic Pentafluoride} \\ (ii)\text{ Borohydride} \end{gathered}[/tex]Explanation:
a) Here, we want to get the molecule that does not obey the octet rule
The correct choice here is arsenic pentafluoride.
Arsenic has 5 valence electrons, then it takes in one each from each of the fluorine atoms. This brings a total of 10 which is more than the 8 stipulated in the octet rule.
The octet rule states that the central atom should have a maximum of 8 electrons
b) Here, we want to get an exception to the octet rule
The correct answer choice here is borohydride. Borohydride has a total of 10 electrons (5 from Boron, 4 from hydrogen (1 from each) and an extra 1)) does not follow or obey the octet rule
